Model 4: Blending

Process Requirements per Unit Time Output per Unit Time
Raw Material 1 (units) Raw Material 2 (units) Fuel (units) Chemical 1 (units) Chemical 2 (units)
1 9 5 50 9 6
2 6 8 75 12 4
3 4 11 100 10 6
Amount
available
200 400 1850

A company makes a blend consisting of two chemicals, 1 and 2, in the ratio 5:2 by weight. These chemicals can be manufactured by three different processes using two different raw materials and a fuel. Production data are given in the table at the top. For how much time should each process be run in order to maximize the total amount of blend manufactured?